System bounce/ Your email is returned

 

Dear ivan214243.7777： So sorry to inform you that your email(ivan214243.7777@blogger.com) was returned.The Details are as follows: Returned mail time： 9/12/2023 6:07:47 a.m. (GMT+08:00) subject： RE: to： See Recipient Address reasons The recipient's account doesn't exist or your account has been blacklisted error code： smtp; 550 5.1.1 : Recipient address rejected: User unknown in relay recipient table